Origin Notes and History:

Grasmere (settlement) identified in the 1930 BC Gazetteer. The dual name "Grasmere (Flagstone Post Office)" adopted 2 March 1948 on Columbia River Basin manuscript #50. Form of name changed to Grasmere (community) 14 January 1983 on 82G/3. Form of name changed to Grasmere (locality) 29 November 1984.

"Earlier named "McGuire" after Howard McGuire who arrived in the district in 1898. In 1922 when a new school was built, every pupil submitted a new name. A draw was held, and the entry which was picked was that of young Warren Lancaster, who had proposed Grasmere."